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Round|Lab Grown|IGI

1.09ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG654412892

Shape and cutting style on the report: Round brilliant

Certificate IGI LG654412892

Diamond specifications and retailer prices

From $153 USD
As of October 29, 2026
Save $890 USD (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,043 USD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG654412892 or 654412892. Listed at 18 retailers as of October 29, 2026, with prices from $153 to $1,043, a $890 spread on the same certified stone. Reve Diamonds lists it at $1,043. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.09
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG654412892
Dimensions6.62 × 6.64 × 4.03 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.62 mm6.64 mm1.09 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG654412892
Side View
Table 59.0%Crown 33.9°Girdle: MediumPavilion 40.9°Culet: NoneDepth 60.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $329 USD|Low: $120 USD|High: $1,043 USD|Avg: $477 USD|+7.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Reve Diamonds
November 1, 2026
Retailer 4$153 USD
Retailer 11$171 USD
Retailer 12$189 USD
Retailer 14$189 USD
Retailer 9$315 USD
Retailer 1$329 USD
Retailer 13$346 USD
Retailer 7$369 USD
Retailer 10$436 USD
Retailer 2$515 USD
Retailer 5$609 USD
Retailer 3$664 USD
Retailer 6$850 USD
Retailer 8$886 USD
Reve Diamonds$1,043 USD

44 data points across 15 retailers

18 retailers$153 USD to $1,043 USD

Retailer 1
-
$151 USD
Price last confirmed 40 days ago
A
Retailer 2
-
$153 USD
View
A
Retailer 3
-
$171 USD
View
Final sale: no returns
Retailer 4
-
$185 USD
View
Price last confirmed 40 days ago
A
Retailer 5
-
$189 USD
View
A
Retailer 6
-
$189 USD
View
A
Retailer 7
-
$315 USD
View
A
Retailer 8
-
$329 USD
£259 GBP
View
B+
Retailer 9
-
$346 USD
View
B+
Retailer 10
-
$369 USD
€351 EUR
View
B+
Retailer 11
-
$436 USD
View
B+
Retailer 12
-
$515 USD
View
Retailer 13
-
$604 USD
View
Price last confirmed 41 days ago
B
Retailer 14
-
$609 USD
View
B
Retailer 15
-
$664 USD
View
Retailer 16
-
$850 USD
View
Price last confirmed 8 days ago
B
Retailer 17
-
$886 USD
£698 GBP
View
Most Expensive
B
Reve Diamonds
499F4957B · Oct 30
$1,043 USD
View
17 more retailers have this diamond
Prices start from $153 USDSave up to $890 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.09ct Round
$153 USD